Dio Brando, later known simply as DIO, is the main antagonist of the first and third parts of the JoJo's Bizarre Adventure series, Phantom Blood and Stardust Crusaders, as well as the first main antagonist of the series overall. He is also a primary antagonist in the sixth part of the series, Stone Ocean. Originally a man of low birth but peerless ambition, Dio is a cunning villain of little conscience and has an insatiable hunger for power. He became a vampire and later a Stand user.